i am using perl script which is scheduled on crontab..its running but in nohup.out file getting blank values..

 #!/usr/bin/perl
use DBI;
use POSIX;
$serip=`ifconfig |grep 'inet addr'`;
@serip=split('\n', $serip);@serip=split(' ',$serip[0]);$sip=$serip[1];
+@serip=split('\.',$serip[1]);
$sid=$serip[3];
$sip =~ s/addr://;
print "ServerIP : $sip ServerID= $sid\n";
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